COMP: Fix not marked 'override' for ImageSink destructor
COMP: Fix not marked 'override' for ImageSink destructor

LucasGandel/ITK,thewtex/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,thewtex/ITK,LucasGandel/ITK,richardbeare/ITK,thewtex/ITK,malaterre/ITK,BRAINSia/ITK,LucasGandel/ITK,richardbeare/ITK,thewtex/ITK,malaterre/ITK,Kitware/ITK,hjmjohnson/ITK,Kitware/ITK,malaterre/ITK,richardbeare/ITK,vfonov/ITK,Kitware/ITK,vfonov/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,richardbeare/ITK,malaterre/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,vfonov/ITK,BRAINSia/ITK,hjmjohnson/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,BRAINSia/ITK,vfonov/ITK,LucasGandel/ITK,thewtex/ITK,vfonov/ITK,hjmjohnson/ITK,malaterre/ITK,Kitware/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,richardbeare/ITK,vfonov/ITK,Kitware/ITK,thewtex/ITK,malaterre/ITK,malaterre/ITK,LucasGandel/ITK,Kitware/ITK,LucasGandel/ITK,LucasGandel/ITK,BRAINSia/ITK,BRAINSia/ITK,vfonov/ITK,thewtex/ITK,LucasGandel/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK